package com.yixia.camera;
import android.media.ExifInterface;
import android.media.MediaMetadataRetriever;
import com.yixia.camera.model.MediaObject.MediaPart;
import com.yixia.camera.util.DeviceUtils;
import com.yixia.camera.util.FileUtils;
import com.yixia.camera.util.Log;
import com.yixia.camera.util.StringUtils;
import com.yixia.videoeditor.adapter.UtilityAdapter;
import java.io.File;
import java.io.IOException;
/**
* ffmpeg工具类
*
* @author yixia.com
*
*/
public class FFMpegUtils {
/** 音量 100% -vol 100 */
public static final float AUDIO_VOLUME_HIGH = 1F;
/** 音量 66% */
public static final float AUDIO_VOLUME_MEDIUM = 0.66F;
/** 音量 33% */
public static final float AUDIO_VOLUME_LOW = 0.33F;
/** 音量 关闭 */
public static final int AUDIO_VOLUME_CLOSE = 0;
/** FFMPEG输出log到logcat */
private static final String FFMPEG_COMMAND_LOG_LOGCATE = " -d stdout -loglevel verbose";
/** FFMPEG视频编码参数 */
private static final String FFMPEG_COMMAND_VCODEC = " -pix_fmt yuv420p -vcodec libx264 -profile:v baseline -preset ultrafast";
/** 获取log输出的文件路径 */
public static String getLogCommand() {
if (VCamera.isLog())
return FFMPEG_COMMAND_LOG_LOGCATE;
else
return " -d \"" + VCamera.getVideoCachePath() + VCamera.FFMPEG_LOG_FILENAME_TEMP + "\" -loglevel verbose";
}
/** 获取转码参数 -vcodec libx264 -profile:v baseline -preset ultrafast */
public static String getVCodecCommand() {
return FFMPEG_COMMAND_VCODEC;
}
/**
* 视频截图
*
* @param videoPath 视频路径
* @param outputPath 截图输出路径
* @param wh 截图宽高，例如80x80
* @return
*/
public static boolean captureThumbnails(String videoPath, String outputPath, String wh) {
return captureThumbnails(videoPath, outputPath, wh, "1");
}
/**
* 导入视频
*
* @param part 分块信息
* @param mWindowWidth 窗口宽度
* @param videoWidth 视频宽度
* @param videoHeight 视频高度
* @param cropX 剪切X坐标
* @param cropY 剪切Y坐标
* @param startTime 剪切开始时间
* @param endTime 剪切介绍时间
* @param hasAudio 是否包含音频
* @return
*/
public static boolean importVideo(MediaPart part, int mWindowWidth, int videoWidth, int videoHeight, int cropX, int cropY, boolean hasAudio) {
if (part != null && !StringUtils.isEmpty(part.tempPath)) {
File f = new File(part.tempPath);
if (f != null && f.exists() && !f.isDirectory()) {
StringBuffer buffer = new StringBuffer("ffmpeg");
//LOG输出
buffer.append(FFMpegUtils.getLogCommand());
// 添加视频
buffer.append(" -i \"");
buffer.append(part.tempPath);
buffer.append("\"");
//校验视频是否旋转
int rotation = -1;
int width = videoWidth, height = videoHeight, cX = cropX, cY = cropY;
float videoAspectRatio = videoWidth * 1.0F / videoHeight;
//读取旋转信息
if (DeviceUtils.hasJellyBeanMr1()) {
MediaMetadataRetriever metadata = new MediaMetadataRetriever();
metadata.setDataSource(part.tempPath);
try {
rotation = Integer.parseInt(metadata.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION));
} catch (NumberFormatException e) {
rotation = -1;
}
} else {
rotation = UtilityAdapter.VideoGetMetadataRotate(part.tempPath);
}
if (rotation == 90 || rotation == 270) {
int w = videoWidth;
width = videoHeight;
height = w;
}
buffer.append(" -vf \"scale=");
if (width >= height) {
//横向
buffer.append("-1:480");
float scaleWidth = 480 * videoAspectRatio;
int viewWidth = (int) (mWindowWidth * videoAspectRatio);
cX = (int) (scaleWidth * (cropX * 1.0F / viewWidth));
} else {
//竖向
buffer.append("480:-1");
float scaleHeight = 480 / videoAspectRatio;//857
int viewHeight = (int) (mWindowWidth / videoAspectRatio);//964
cY = (int) (scaleHeight * (cropY * 1.0F / viewHeight));//
}
buffer.append("[tmp];[tmp]");
boolean hasRotation = true;
switch (rotation) {
case 90:
buffer.append("transpose=1[transpose];[transpose]");
break;
case 270:
buffer.append("transpose=2[transpose];[transpose]");
break;
case 180:
buffer.append("vflip[vflip];[vflip]hflip[transpose];[transpose]");
break;
default:
hasRotation = false;
break;
}
buffer.append(" crop=480:480:");
buffer.append(cX);
buffer.append(":");
buffer.append(cY);
buffer.append("\"");
//去除旋转信息
if (hasRotation) {
buffer.append(" -metadata:s:v rotate=\"\"");
}
// 裁剪时间 -ss是秒 -t也是秒
buffer.append(" -ss ");
buffer.append(String.format("%.1f", part.startTime / 1000F));
buffer.append(" -t ");
buffer.append(String.format("%.1f", (part.endTime - part.startTime) / 1000F));
buffer.append(" -an -vcodec rawvideo -f rawvideo -s 480x480 -pix_fmt yuv420p -r 15 \"");
buffer.append(part.mediaPath);
buffer.append("\"");
if (!hasAudio) {
//生成采样数据 // 采样率44100 * 采样位(unsigned 16bit = 2)* 声道(1) * 时间(1秒)
final byte[] hz = new byte[44100 * 2 * 1 * 1];
part.prepareAudio();
try {
int duration = (int) (part.endTime - part.startTime);
int forCount = duration / 1000;
if (forCount > 0) {
for (int i = 0; i < forCount; i++) {
part.mCurrentOutputAudio.write(hz);
}
}
if (duration % 1000 != 0) {
int lastSize = (int) (44100 * 2 * 1 * (duration - forCount * 1000) / 1000F);
if (lastSize % 2 != 0)
lastSize++;
part.mCurrentOutputAudio.write(new byte[lastSize]);
}
} catch (IOException e) {
Log.e("Yixia", "convertImage2Video", e);
} catch (Exception e) {
Log.e("Yixia", "convertImage2Video", e);
}
part.stop();
} else {
// 裁剪时间 -ss是秒 -t也是秒
buffer.append(" -ss ");
buffer.append(String.format("%.1f", part.startTime / 1000F));
buffer.append(" -t ");
buffer.append(String.format("%.1f", (part.endTime - part.startTime) / 1000F));
buffer.append(" -vn -acodec pcm_s16le -f s16le -ar 44100 -ac 1 \"");
buffer.append(part.audioPath);
buffer.append("\"");
}
boolean result = UtilityAdapter.FFmpegRun("", buffer.toString()) == 0;
if (!result) {
//转码失败，写日志
VCamera.copyFFmpegLog(buffer.toString());
}
return result;
}
}
return false;
}
/**
* 图片转视频（用于图片导入）
*/
public static boolean convertImage2Video(MediaPart part) {
if (part != null && !StringUtils.isEmpty(part.tempPath)) {
File f = new File(part.tempPath);
if (f != null && f.exists() && !f.isDirectory()) {
// float duration = part.duration / 1000F;
// === 生成1秒的视频 ===
// 获取图片的宽高和方向
int width = 0, height = 0, rotation = -1, cropX = 0, cropY = 0;
try {
ExifInterface exif = new ExifInterface(part.tempPath);
width = exif.getAttributeInt(ExifInterface.TAG_IMAGE_WIDTH, 0);
height = exif.getAttributeInt(ExifInterface.TAG_IMAGE_LENGTH, 0);
rotation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1);
} catch (IOException e) {
Log.e("Yixia", "convertImage2Video", e);
}
StringBuffer scaleBuffer = new StringBuffer();
if (width > 0 && height > 0) {
float videoAspectRatio = width * 1.0F / height;
scaleBuffer.append(" -vf \"scale=");
if (width > height) {
// 横向
scaleBuffer.append("-1:480");
float scaleWidth = 480 * videoAspectRatio;
cropX = (int) ((scaleWidth - 480) / 2);
} else {
scaleBuffer.append("480:-1");
float scaleHeight = 480 / videoAspectRatio;
cropY = (int) ((scaleHeight - 480) / 2);
}
scaleBuffer.append("[tmp];[tmp]");
// boolean hasRotation = true;
switch (rotation) {
case ExifInterface.ORIENTATION_ROTATE_90:
scaleBuffer.append("transpose=1[transpose];[transpose]");
break;
case ExifInterface.ORIENTATION_ROTATE_180:
scaleBuffer.append("transpose=2[transpose];[transpose]");
break;
case ExifInterface.ORIENTATION_ROTATE_270:
scaleBuffer.append("vflip[vflip];[vflip]hflip[transpose];[transpose]");
break;
}
scaleBuffer.append(" crop=480:480:");
scaleBuffer.append(cropX);
scaleBuffer.append(":");
scaleBuffer.append(cropY);
scaleBuffer.append("\"");
}
scaleBuffer.append(" -s 480x480");
// ffmpeg -y -loop 1 -f image2 -i Goddess@2x.png -vcodec
// rawvideo -r 15 -t 1 -f rawvideo -s 480x480 -pix_fmt nv21
// Goddess.yuv
// -s 480x480
String cmd = String.format("ffmpeg %s -y -loop 1 -f image2 -i \"%s\" -vcodec rawvideo -r 15 -t %.1f -f rawvideo %s -pix_fmt yuv420p \"%s\"", FFMpegUtils.getLogCommand(), part.tempPath, part.duration / 1000F, scaleBuffer.toString(), part.mediaPath);
if (UtilityAdapter.FFmpegRun("", cmd) == 0) {
// === 生成1秒的音频 === //44100*2*1*1
// 采样率44100 * 采样位(unsigned 16bit = 2)* 声道(1) * 时间(1秒)
final byte[] hz = new byte[44100 * 2 * 1 * (int) (part.duration / 1000F)];
part.prepareAudio();
try {
part.mCurrentOutputAudio.write(hz);
part.stop();
return true;
} catch (IOException e) {
Log.e("Yixia", "convertImage2Video", e);
} catch (Exception e) {
Log.e("Yixia", "convertImage2Video", e);
}
} else {
//转码失败，写日志
VCamera.copyFFmpegLog(cmd);
}
return true;
}
}
return false;
}
/**
* 视频截图
*
* @param videoPath 视频路径
* @param outputPath 截图输出路径
* @param wh 截图画面尺寸，例如84x84
* @param ss 截图起始时间
* @return
*/
public static boolean captureThumbnails(String videoPath, String outputPath, String wh, String ss) {
//ffmpeg -i /storage/emulated/0/DCIM/04.04.mp4 -s 84x84 -vframes 1 /storage/emulated/0/DCIM/Camera/miaopai/1388843007381.jpg
//ffmpeg -i eis-sample.mpg -s 40x40 -r 1/5 -vframes 10 %d.jpg
FileUtils.deleteFile(outputPath);
if (ss == null)
ss = "";
else
ss = " -ss " + ss;
String cmd = String.format("ffmpeg -d stdout -loglevel verbose -i \"%s\"%s -s %s -vframes 1 \"%s\"", videoPath, ss, wh, outputPath);
return UtilityAdapter.FFmpegRun("", cmd) == 0;
}
// /**
// * 综合转码
// *
// * @param mMediaObject 视频数据存储对象，涵主题、小部件和视频片段
// * @param targetPath 目标路径
// * @param windowWidth 视频宽度
// * @param complexWatermark 是否合并主题（预览页主题和主题音乐）
// * @param needCrop 是否需要剪切（如果yuv已经是480x480就不需要裁剪了）
// * @return
// */
// public static boolean videoTranscoding(MediaObject mMediaObject, String targetPath, int windowWidth, boolean complexWatermark) {
// if (mMediaObject == null || StringUtils.isEmpty(targetPath) || windowWidth <= 0)
// return false;
//
// StringBuffer buffer = new StringBuffer("ffmpeg");
//
// buffer.append(getLogCommand());
//
// //输入音频
// buffer.append(" -f s16le -ar 44100 -ac 1 -i \"");
// buffer.append(mMediaObject.getConcatPCM());
// buffer.append("\"");
//
// //合并主题音乐
// MediaThemeObject theme = mMediaObject.mThemeObject;
// if (complexWatermark) {
// if (theme != null && StringUtils.isNotEmpty(theme.audio)) {
// float volume = theme.volumn;
// //主题音乐
// buffer.append(" -i \"");
// buffer.append(theme.audio);
// buffer.append("\"");
// buffer.append(" -filter_complex \"");
// if (volume >= 0) {
// buffer.append("[1:a]volume=");
// buffer.append(String.format("%.2f", volume));
// buffer.append("[a1];[0:a][a1]");
// }
// buffer.append("amix=inputs=2:duration=first:dropout_transition=2\"");
// }
// }
//
// // 添加视频
// buffer.append(" -f rawvideo -pix_fmt yuv420p -s 480x480 -r 15 -i \"");
// buffer.append(mMediaObject.getConcatYUV());
// buffer.append("\"");
//
// //是否动态水印
// final int watermarkCount = theme == null ? 0 : theme.watermarkes.size();
// ArrayList<String> widgetsInput = new ArrayList<String>();
// ArrayList<String> widgetsOverlay = new ArrayList<String>();
//
// float videoAspectRatio = windowWidth * 1.0F / 480;
//
// //添加水印
// if (watermarkCount > 0 && complexWatermark && theme.frameCount > 0) {
// for (int i = 0; i < watermarkCount; i++) {
// widgetsInput.add(String.format(" -i \"%s\"", theme.watermarkes.get(i)));
// // Log.e("FFMpegUtils", "videoTranscoding...frameDuration:" + theme.frameDuration);
// if (watermarkCount == 1)
// widgetsOverlay.add("overlay=0:0");
// else
// widgetsOverlay.add(String.format("overlay=x='if(eq(floor(mod(t*%d,%d)),%d), 0, -500)':y=0", 1000 / (theme.frameDuration / watermarkCount), watermarkCount, i));
// }
// }
//
// //添加小部件
// for (MediaPart part : mMediaObject.getMedaParts()) {
// if (part != null && part.widgets != null && part.widgets.size() > 0) {
// for (int i = 0, j = part.widgets.size(); i < j; i++) {
// ThemeWidget widget = part.widgets.get(i);
// widgetsInput.add(String.format(" -i \"%s\"", widget.watermark));
// float minTime = (part.startTime - part.cutStartTime) / 1000F;
// float maxTime = (part.endTime - (part.endTime - part.startTime - part.cutEndTime)) / 1000F;
// widgetsOverlay.add(String.format("overlay=x='if(between(t, %.3f, %.3f), %d, -500)':y=%d", minTime, maxTime, (int) (widget.overlayX / videoAspectRatio), (int) (widget.overlayY / videoAspectRatio)));
// }
// }
// }
//
// //讲小部件和主题加入命令行
// if (widgetsInput.size() > 0) {
// buffer.append(StringUtils.join(widgetsInput, " "));
// buffer.append(" -filter_complex \"");
// buffer.append(StringUtils.join(widgetsOverlay, ","));
// buffer.append("\"");
// }
//
// buffer.append(getVCodecCommand());
// buffer.append(" -b:v " + mMediaObject.getVideoBitrate() + "k -g 30");//-ar 44100 -ac 2 -b:a 64k
// buffer.append(" -acodec libfdk_aac -ar 44100 -ac 1 -b:a 64k");
// buffer.append(" -f mp4 -movflags faststart \"");
// buffer.append(targetPath);
// buffer.append("\"");
//
// boolean result = UtilityAdapter.FFmpegRun("", buffer.toString()) == 0;
// if (!result) {
// VCamera.copyFFmpegLog(buffer.toString());
// }
// return result;
// }
}